Cumberland 4801-5098 - Farm Hand Vent Master Owner's manual

Brand: Cumberland

Model: 4801-5098 - Farm Hand Vent Master

Type: Owner's manual

Part No. 4801-5098 Owners Manual Farm Hand Vent Master

Farm Hand Vent Master

16 Stage Environmental Controller

Cumberland

1004 E. Illinois St.

Assumption, IL 62510

Part No. 4801-5098 Farm Hand Vent Master Table of Contents

Table of Contents

1.Ratings and specifications .............................................................................................................................. 1

2.Warnings ........................................................................................................................................................ 1

3.Introduction .................................................................................................................................................... 2

4.Static Pressure Overview ................................................................................................................................ 3

5.Why Use a Pressure Controller? .................................................................................................................... 3

6.Pressure Ramping (Optional) Explanation ..................................................................................................... 4

7.Day to Day Operating Instructions ................................................................................................................. 5

7.1Checking/Adjusting Temperatures, and Timer Percentages ................................................................... 5

7.2Running Vent Machines ......................................................................................................................... 8

7.3Adjusting Stage On/OffPoints ................................................................................................................ 8

8.Program Mode ................................................................................................................................................ 9

8.1Sensors For Display (PSd)...................................................................................................................... 9

8.2Stage Parameters .................................................................................................................................... 9

8.2.1Stage Sensors (P1) .......................................................................................................................... 9

8.2.2Stage Mode (P2) ............................................................................................................................. 9

8.2.3Stage Timer Settings (P3) ............................................................................................................. 10

8.2.4Minimum Runtime Percentage (P10) (Variable Stages Only)...................................................... 10

8.2.5Motor Curve (P11) (Variable Stages Only) .................................................................................. 11

8.3Vent Parameters .................................................................................................................................... 11

8.4Pressure Ramping Parameters .............................................................................................................. 11

8.5Pressure Alarm Parameters ................................................................................................................... 12

8.6PC Compatible Network Parameters .................................................................................................... 12

8.7Cool Timer Settings (ON/OFF Stages Only) ....................................................................................... 12

8.8Sensor Calibration ................................................................................................................................ 12

9.Rarely Changed Settings .............................................................................................................................. 13

10.Controller Installation and Setup .............................................................................................................. 15

11.Programming Examples ........................................................................................................................... 15

11.1Setting Stage OnPoints and OffPoints .................................................................................................. 15

11.2Setting up Stage Modes, and Timer Status ........................................................................................... 16

11.3Setting Up Tunnel Control ................................................................................................................... 16

11.4Cool Timer Stage Operation ................................................................................................................. 17

11.5Variable Speed Stage Operation ........................................................................................................... 18

11.5.1Variable Speed Stage Operation (Variable Stage Model Only) ................................................... 18

11.5.2Progressive Cool Timer Option .................................................................................................... 19

12.Maintenance ............................................................................................................................................. 19

13.Wiring Diagrams, Schematics, etc. .......................................................................................................... 20

13.1Connecting the Vent Machines to the Vent Master .............................................................................. 22

13.2Connecting Sensors to the Vent Master ............................................................................................... 23

13.3Connecting Stages to a Relay Panel ..................................................................................................... 24

13.4Connecting AC Power to the Vent Master ........................................................................................... 25

13.5Variable Speed Wiring ......................................................................................................................... 26

13.6Variable Speed Wiring with an External Hookup ................................................................................ 27

13.7Connecting the Vent Master to a Data Shuttle ..................................................................................... 28

13.8Connecting the Vent Master to a Static Pressure Monitor.................................................................... 29

13.9Connecting the Vent Master to a Series or Parallel Alarm ................................................................... 30

14.Program Reference ................................................................................................................................... 31

15.Error Codes............................................................................................................................................... 34

15.1Descriptions .......................................................................................................................................... 34

15.2Possible Solutions ................................................................................................................................. 35

15.3Temperature vs. Sensor Resistance Table ............................................................................................ 36

16.Program Parameter Listing ....................................................................................................................... 37

17.Error Code Listing .................................................................................................................................... 38

18.Program Data Sheet .................................................................................................................................. 39

19.Warranty ................................................................................................................................................... 40

Part No. 4801-5098 Farm Hand Vent Master 1

1. Ratings and specifications

 115/230 Volts (Depending on switch position.)

 50/60 Hz.

 12 Amps per stage.

 12 Amps per variable speed stage.

 8 Amps per vent machine.

 Room must be kept above 32F/0C and below 122F/50C.

2. Warnings Warning!

Before connecting power to the machine, be sure to check the position of the

voltage selector switch located next to the transformer on the relay board.

Improper positioning of this switch will cause system failure.

Warning!

When this controller is used in a life support heating and ventilation system

where failure could result in loss or injury, the user should provide adequate

back-up, or accept the risk of such loss or injury!

Part No. 4801-5098 Farm Hand Vent Master 2

3. Introduction

There are two models of the Vent Master controller:

(1) Farm Hand Vent Master without Variable Speed

(2) Farm Hand Vent Master with Variable Speed

The only difference between the models is the variable speed option.

The Farm Hand Vent Master Stage Controller is designed to be one of the simplest controllers on the

market to operate, but to also be one of the most powerful. The Vent Master combines the features of the

Farm Hand Stage Master 12 with the capabilities of the Farm Hand Power Vent into a single controller.

The Vent Master has four main regions on the faceplate: the main display, stage displays, the control

button region and the vent machine control region. The main display area includes the main display, and

four green LED’s which tell what the main display is indicating. If the green light beside “Temperature” is

lit, then the display is showing the display option chosen in the Program Mode under the parameter PSd.

Refer to Section 6.1 for an explanation of the PSd parameter.

On the left hand side of the controller face are the stage displays. When the controller is operating the

OnPoint of each stage (the temperature the stage will turn on) is displayed. Next to the stage indicators, is a

button with the number of the stage printed on it. Press this button to set the On and OffPoints for that

stage. (Stage OnPoints and OffPoints are discussed later in the manual.) The blank white region is for

labeling equipment such as (front heat, back heat, sidewall fans, etc.). Finally, there is a small red LED on

the bottom right of this white region. This is the stage status indicator. This light will be lit if the stage is

on, and will flash on and off if it is running because it is on a timer.

Just below the main display on the right hand side of the controller is the control button region. This

region has three buttons, Mode, +, and -. You will learn the use of these three buttons later in this manual.

Finally, on the bottom right hand side of the controller is the vent machine control region. This region

includes an Automatic/Manual switch, and an Open/Off/Close switch for each machine.

Main Display

Control Buttons

Display Indicators

Stage Status Indicators

ariable Stages

(Depending On Model)

Vent Machine Controls

Stage Buttons

Notice: If the Farm Hand Vent Master is a Variable Speed Model, then stages 1 & 2 are the

Variable Speed stages.

Farm Hand Vent Master 16

Part No. 4801-5098 Farm Hand Vent Master 3

4. Static Pressure Overview

The Farm Hand Vent Master has been designed with the producer in mind. Routine tasks such as changing

the pressure limits are easily reset, and are familiar in nature.

This controller has only two basic pressure settings, a Target Pressure, and a Pressure Differential. The

Target Pressure is the static pressure that the system tries to maintain within the limits of the Pressure

Differential. The Pressure Differential is the range around the Target Pressure that is considered

satisfactory. From the Target Pressure and the Pressure Differential the High and Low Pressure limits are

calculated. The High Pressure limit is the Target Pressure plus half of the Pressure Differential and the

Low Pressure limit is the Target Pressure minus half of the Pressure Differential. The controller will open

and close the vents as needed to maintain pressure between the high and low limits.

Low Pressure

High Pressure Limit

Low Pressure Limit

When pressure is

in this range, the

controller will not

adjust vents.

When pressure is

above the high

limit, the vent

machine will open

vents to lower

pressure.

When pressure is

below the low

limit, the vent

machine will close

vents to raise

pressure.

High Pressure

Room Pressure

Now that we know how the pressure limits are established, lets move on to how to set up those limits.

Press the mode button a few times, and you will see that the display changes each time. If you will look

just to the right of the display, you will see four green lights labeled Temperature, Static Pressure,

Var/Timer Percent, and Target. The green light tells you what setting you are looking at in the main

display. If the light beside Static Pressure is lit, the numbers in the display show you the current pressure

in your building. However, for viewing Target Temperature both the LEDs beside “Target” and

“Temperature” will be lit. For viewing Target Static Pressure both the LEDs beside “Target” and “Static

Pressure” will be lit.

Assume that you have this controller installed in your house, and you decide you want pressure to be kept a

little bit lower. You walk to the controller, press and release the mode button, watching the green lights

until the “Target” and “Static Pressure” LED is lit. If you look at the display now, you see the present

setting for the Target Pressure. To lower it, press and release the minus (-) button until you see the new

limit you want. The controller will now start operating using your new limit. If you want the Vent Master

to maintain the Target Pressure within narrower limits decrease the Pressure Differential. See Section 6 for

a graphic example using the Target Pressure and Pressure Differential.

5. Why Use a Pressure Controller?

The Farm Hand Vent Master is used to control vent inlets in agricultural enclosures. Maintaining a slight

negative pressure inside a building ensures that air flows in evenly from all openings in the building.

However, as static pressure increases, the speed and volume of the incoming air increases. It is important

to set the pressure at an appropriate level to ensure maximum efficiency. Too little vacuum, and the

livestock could suffer from drafting, and temperature shock. Too much vacuum, and fan efficiency is

reduced, increasing the levels of moisture, ammonia in the enclosure, and also driving up electricity costs.

Part No. 4801-5098 Farm Hand Vent Master 4

6. Pressure Ramping (Optional) Explanation

High Volume of Slow Warm Air

Low volume of fast moving air enters the vents and is "thrown"

to the ceiling, where it is slowed, and warmed by the mixing with

the warmer air in the top of the enclosure before settling down

to the bottom of the building.

The above illustrations show the need for a different air flow rate when the temperature changes. This is

accomplished with the ramping feature.

Ramping allows you to set a band of pressure to be maintained, taking into account the OUTSIDE

temperature. (After all, outside air is what is flowing into the house.) If the outside temperature is warm, it

will allow taking in a large volume of slow moving warm air (low static pressure), but when outside air is

cold, the Vent Master will adjust to allow a low volume of fast moving cold air (high static pressure).

Using figures from the chart above; the controller was programmed as follows:

P21 = Pressure Differential 0.02” w.c.

P30 = Ramping Mode ON

P31 = High Temperature Limit 80°F

P32 = High Temperature Target Pressure 0.03" w.c.

P34 = Low Temperature Limit 40°F

P35 = Low Temperature Target Pressure 0.11" w.c.

0.12

0.10

0.08

0.06

0.04

0.02

Temperature (F)

Negative

Pressure

("w.c.)

010 20 30 40 50 60 70 80 90 100 110

Above Target High Pressure

Vent Machine Opens

Below Target Low Pressure

Vent Machine Closes

Acceptable Target Pressure

No Machine Operation

Pressure Differential

Target Pressure

Part No. 4801-5098 Farm Hand Vent Master 5

As you can see from the graph, if outside temperature is 50°F, the controller will try to maintain a static

pressure between .08, and .1” w.c. If the pressure goes above .1” w.c. the vent machine will open, and

reduce static pressure, and if the pressure goes below .0.08” w.c., the vent machine will close, increasing

the static pressure.

7. Day to Day Operating Instructions

This section of the manual will give you all you need to know about the day to day operation of your

controller.

7.1 Checking/Adjusting Temperatures, and Timer Percentages

When no one has pressed a button for over one minute, the display will automatically show the

room temperature and the display indicator will indicate “Temperature”. To see the Static

Pressure, press the button labeled “Mode”. This button is located in the center of the controller

facepad. When this button is pressed, watch the green LED’s beside the main display. Whenever

a single LED is lit, this is the parameter you are viewing.

For viewing Target Temperature both the LEDs beside “Target” and “Temperature” will be lit.

For viewing Target Static Pressure both the LEDs beside “Target” and “Static Pressure” will be

lit.

Room Temperature

The temperature read by the sensor(s) chosen in the Program Mode under the parameter

PSd. Refer to Section 8.1 for an explanation of the PSd parameter.

Static Pressure

The static pressure sensed by the controller. While displaying the Static Pressure, the

controller will also display the temperatures read by sensors 1, 2, 3 & 4 in the

corresponding stage displays. The remaining stage displays will be blank at this time.

Var/Timer Percentage

The Var/Timer percentage parameter can be used to set variable speed and/or runtime

percentage depending on the model of the Farm Hand Vent Master.

Variable Speed refers to the increase or decrease of fan speed as regulated by the controller

based on temperature. For example, a Var/Timer Pct. set to 50 means that a fan will run at

50% of its maximum speed at a particular temperature.

Temperature

displays Room

Stage Status

Indicator LED

Displays reading of Sensor

Part No. 4801-5098 Farm Hand Vent Master 6

Runtime percentage refers to the percentage of the timer cycle that a stage on a timer will

run. For example, if the Var/Timer Pct. is set for 30, and your timer cycle is set for 10

minutes, the timed stages will run for 3 minutes out of every 10 minutes (i.e. 30% of the

timer cycle).

There are two models of the Farm Hand Vent Master Controller. On the Non-variable

speed model, this setting refers to the Runtime percentage for any of the stages that are on

the system timer. On the Variable speed model, this setting is used to set the minimum

speed for stages 1 & 2 and also the Runtime percentage for any of the remaining ON/OFF

stages that are on the system timer. Please note your model. You can determine the model

by comparing the main display sequence to that described in the following diagrams.

Non-variable Speed Model - (Runtime Percentage)

The Var/Timer Pct. parameter sets the Runtime percentage of all stages that are placed on a

timer (See Section 9.2). The value of the Var/Timer Pct. in the main display refers to a

Runtime % which can be set to values between 5 and 100 using the "+" and "-" buttons.

When you step through the main display parameters, notice the stage status indicators. As

the Mode button is pressed, a Var/Timer Pct. value will appear in the main display, and

stages affected by this setting will have stage status indicators lit.

Variable Speed Model - (Minimum Speed %)

On the variable speed model, this setting allows you to program three parameters: the

Minimum speed % for stage 1, the Minimum speed % for stage 2, and the Runtime % for

the remaining ON/OFF stages. If using the variable stages as progressive cool timer

stages, this setting becomes the Minimum runtime % instead of the Minimum speed %.

(Refer to Section 9.5.2 for more discussion on this option).

As you step through the main display and you get to the Var/Timer Pct. setting, notice

the stage status indicators. These indicators show which setting you are programming.

The Var/Timer Pct setting is displayed as shown in the following diagram.

Non-variable Speed Model

(

Parameter selection se

uence

)

Room

Temperature Static

Pressure Target

Temperature

Var/Timer

Percentage

on/off stages

Runtime %

Target

Pressure

Variable Speed Model

(Parameter selection sequence)

Part No. 4801-5098 Farm Hand Vent Master 7

Target Temperature

The target temperature is the temperature the system tries to maintain.

To adjust these settings, press the mode button until you see the setting you want to

adjust, then use the + button to raise the value, and the - button to lower the value. When

you are finished setting a new value, either press the mode button again, or do nothing,

and the system will return to normal operation within a few seconds.

Target Static Pressure

The Static Pressure the system tries to maintain within the limits of the Pressure

Differential.

To adjust the Target Static Pressure, press the mode button until you see the setting you

want to adjust, then use the + button to raise the value, and the - button to lower the

value. When you are finished setting a new value, either press the mode button again, or

do nothing, and the system will return to normal operation within a few seconds.

The Pressure Differential is the range around the Target Pressure that is considered

satisfactory. From the Target Pressure and the Pressure Differential the target high and

low pressure limits are calculated as follows:

Target High Pressure Limit = Target Pressure + ½ Pressure Differential

Target Low Pressure Limit = Target Pressure + ½ Pressure Differential

For Target Temperature, both

the Target LED and the

Temperature LED will be

lighted.

Room

Temperature Static

Pressure Target

Temperature

ar/Timer

Percentage

Stage 1

(Minimum Speed %)

Stage 2

(Minimum Speed %)

on/off stages

(Runtime %)

Target

Pressure

For Target Pressure, both the

Target LED and the Static

Pressure LED will be lighted.

Part No. 4801-5098 Farm Hand Vent Master 8

Stages

Press any stage

button to set

On/OffPoints.

Adjust value

with + and -

buttons.

Stage Button

7.2 Running Vent Machines

Under normal circumstances the machines should be left in automatic (Auto) as shown above.

This way, if the controller needs to open the vents, it will open them. However, if you want to

open or close them for any reason do the following.

1. Find the switches for the machine you want to run, and check that the Open/Off/Close switch

is in the Off position. This makes sure that the machine does not run until you want it to.

2. Place the Automatic/Manual switch for that machine in the “Manual” position.

3. To open the machine place the Open/Off/Close switch to the position marked “Open”.

4. To close the machine place the Open/Off/Close switch to the position marked “Close”.

5. Finally when you are finished positioning the machine, place the switch back into the “Off”

position. Note: "Off" position is between "Open" and "Close".

6. When you are ready for the controller to take over control of the vents, return the

Automatic/Manual switch to the automatic position.

7.3 Adjusting Stage On/OffPoints

If you decide that a fan stage comes on too soon, or waits until temperature is too high to come

on, you can easily adjust that setting. To adjust the stage OnPoint, press the numbered stage

button one time. The individual stage display will

flash, and the main display will flash between

“On” and the Target Temperature. Use the +

button to raise the value in the individual stage

display until you see the correct temperature, or

the - button to lower the value until the stage

OnPoint is where you want it. When you are

finished setting a new value, press the individual

stage button again and the main display will read

“Off” and flash the target temperature. Use the +

and/or - buttons until the correct setting shows in

the individual stage display.

Notice that as you press the stage button the first time, all of the individual stage displays show

their stage’s OnPoints. Only one stage will flash this reading. When you press the + and/or -

button, you will only adjust that particular stage's value. To adjust another stage, press that

stage’s button.

When you have finished setting your stage On/OffPoints press the individual stage button once

more, and the system will not flash any stage displays, and the main display will read a steady

value. Your Vent Master is now operating normally again.

Note: In this manual, a stage's OnPoint parameter is referenced as (ON). A stage's OffPoint

parameter is referenced as (OFF). For Variable stages, the Minimum OnPoint is the value of

the (OFF) parameter. The Maximum OnPoint is the value of the (ON) parameter.

Manual Open

(UP), Off (Center)

and Close

(DOWN) switch

Auto/Manual

switch

Part No. 4801-5098 Farm Hand Vent Master 9

8. Program Mode

Settings that are usually set up once per growout, or maybe even just for summer or winter are referred to

as program parameters and are accessed by taking the controller to program mode. Some examples of

these settings are Vent Machine Time Delay, Runtime, Stages on Timers, and Sensor Calibration. To get

to program mode, press and hold the “Mode” button for five seconds. When the controller has entered

program mode, the main display will flash between “PSd” and the value of this parameter.

The “PSd” is known as a parameter number. All the program items for the controller have a parameter

number assigned to them. The numbers are listed in the section called “Program Reference” in the back of

this manual with a short description of each parameter. When in program mode, you change the current

parameter by using the + and - buttons as needed. When you have finished with the current setting, press

the “Mode” button to move to the next parameter.

8.1 Sensors For Display (PSd)

The user is given the choice as to what he/she wants to display for Room Temp. The choice is

made in Program Mode under the parameter PSd. The following is a list of choices:

PSd = Room Temperature Display

100 = Sensor 1

020 = Sensor 2

120 = Average of Sensors 1 & 2

003 = Sensor 3

103 = Average of Sensors 1 & 3

023 = Average of Sensors 2 & 3

123 = Average of Sensors 1, 2, & 3

8.2 Stage Parameters

The following parameters are used to program each stage on the Farm Hand Vent Master.

Through these parameters, the user has complete control over the operation of each stage. The

following sections explain each parameter in detail.

P1 = Stage Sensors

P2 = Stage Mode

P3 = Stage Timer Settings

P10 = Minimum Runtime Percentage (Variable Speed Stages Only)

P11 = Motor Curve (Variable Speed Stages Only)

8.2.1 Stage Sensors (P1)

A stage can be programmed to run off of any sensor or combination of sensors. The following is

the list of P1 options:

P1 = Stage Sensors

100 = Sensor 1

020 = Sensor 2

120 = Average of Sensors 1 & 2

003 = Sensor 3

103 = Average of Sensors 1 & 3

023 = Average of Sensors 2 & 3

123 = Average of Sensors 1, 2, & 3

8.2.2 Stage Mode (P2)

The Farm Hand Vent Master is a very intelligent controller, therefore, it needs to not only know

whether this is a heating or cooling stage but also what type of cooling stage. This feature allows

the grower to program the cooling stages to work exactly like he wants them to without the

expense of hard wiring through relays and limit switches. This feature allows the Farm Hand

Part No. 4801-5098 Farm Hand Vent Master 10

Vent Master to better react to the environment. Any Stage can be programmed to be one of the

following:

1 = Heat

This mode allows the equipment to operate when room temperature is

below the OnPoint for the stage.

2 = Cool Stir

This mode setting is for cool stages that stir inside sir. This stage will not

run during tunnel mode.

3 = Cool Negative

This mode setting is primarily for negative cross ventilation fans. This

stage will not run during tunnel mode.

4 = Cool Negative Tunnel

This mode setting works exactly like the Cool Negative setting except it

will run if the controller goes into tunnel mode. This stage is sometimes

referred to as a transitional stage. In other words, it operates before it

goes into tunnel and also during tunnel.

5 = Cool Tunnel

This mode setting only works when the controller is in tunnel mode.

8.2.3 Stage Timer Settings (P3)

The Farm Hand Vent Master is equipped to satisfy any of your minimum ventilation

needs for regular runtime timers, to cool timers, to progressive timers.

00 = No Timer

Select 0 for the timer setting if you do not want the stage to be on a timer.

01 = Runtime Timers

Any one of the On/Off stages can be placed on the system timer by

placing a "1" in parameter 3 (P3) of the stage. By doing this the stage

will operate off of the system timer while the temperature is below the

stage's OnPoint. Once the temperature reaches the stage OnPoint, the

stage will come on full time.

02 = Cool Timers

On/Off Stages

Any one of the On/Off Stages can be placed on a cool timer.

By doing this the stage will operate off the system timer only while the

temperature is above the stage OffPoint (OFF). Refer to Section 11.4

"Cool Timer Stage Operation" for proper setup.

Variable Stages

Any of the variable stages can be placed on a cool timer. By doing this

the stage will be placed on the system timer all the time. It will run full

speed for a certain percentage of time that is set in Var Timer/PCT. This

percentage will progressively increase as the temperature rises above the

minimum OnPoint setting (OFF). Refer to Section 11.5 "Variable Speed

Stage Operation" for proper setup.

8.2.4 Minimum Runtime Percentage (P10) (Variable Stages Only)

This setting is the percentage of the system timer that the variable stage will run at

minimum speed if the stage sensor's temperature is below the Minimum OnPoint (OFF)

for the stage.

Part No. 4801-5098 Farm Hand Vent Master 11

8.2.5 Motor Curve (P11) (Variable Stages Only)

The controller is programmed to operate single phase or three phase fan motors at their

optimum performance levels. Select the correct motor curve parameter (P11) for your

particular application from the following table.

8.3 Vent Parameters

This controller runs 1 or 2 vent machines independently. No additional resources – including

external timers – are necessary. A brief overview of the programmable parameters for the vent

machines follows:

P20 – Vent Machine Time Delay

This setting is the length of time a pressure reading must be out of range before

the controller will operate the vents. This will keep the vents from constantly

cycling open, then closed. If your vents cycle too much, increase this setting

using the plus (+) button.

P21 – Static Pressure Differential

The range over which the Target Pressure will be maintained.

P22 – Tunnel Target Pressure

In tunnel mode, this is the Target Pressure that will be maintained if and only if

SWX 4 of the Tunnel Switches is ON.

P25 – Tunnel OnPoint

This is the sensor 4 temperature at which the controller will enter tunnel mode.

This is only applicable when tunneling on outside temperature.

P26 -- Tunnel OffPoint

This is the sensor 4 temperature at which the controller will exit tunnel mode.

This is only applicable when tunneling on outside temperature.

8.4 Pressure Ramping Parameters

P30 – Ramping Mode On/Off

Ramping mode may be turned on or off. If you choose “OFF”, you will not see

the following settings. However, if you choose “ON”, with the plus or minus

button, you turn ramping on, and will have to set the following items. See

Section 6 on ramping for more information on this feature.

P31 – High Temperature Limit

The outside temperature the controller will use in determining the low range of

its limits.

P32 – High Temperature Target Pressure

The target pressure when the outside temperature is at the high temperature

limit.

P34 – Low Temperature Limit

The outside temperature the controller will use in determining the high range of

its limits.

Curve Conditions

0 This curve is optimized for use with Cumberland’s line of Funnel Flow Fans that are 24” or less. Also, line

voltage must be Single Phase.

1 This curve lends itself better to operation of 36” fans. The power distributed at each percentage is somewhat

greater than that of curve 0. Therefore, the speed will be a little greater than that of curve 0

2 This curve is for 3-Phase systems. Its purpose is to shift the voltage curve to give a much higher power from

the varied phase. Conditions that would warrant the use of this curve is a variable speed fan that varies a great

deal from 100% speed to 95% speed.

3 This curve is for 3-Phase systems. Its purpose is to shift the voltage curve to give much less power from the

varied phase. Conditions that would warrant the use of this curve is a variable speed fan that varies very little

from 100% speed to 5% speed.

Part No. 4801-5098 Farm Hand Vent Master 12

P35 – Low Temperature Target Pressure

The target pressure when the outside temperature is at the low temperature limit.

8.5 Pressure Alarm Parameters

P60 – Low Pressure Alarm

The Low Pressure alarm will send a signal when pressure drops below the Low

Pressure setpoint for greater than 45 seconds. This alarm warns if the vents

failed to close for some reason. Setting the Low Pressure alarm setpoint to

“OFF” prevents the alarm from sounding.

P61 – High Pressure Alarm

The High Pressure alarm will send a signal to your existing alarm system in the

same manner as the Low Pressure alarm, but only when pressure exceeds the

High Pressure Setpoint for greater than 45 seconds. (High Negative Pressure.)

This alarm warns if the vents did not open for some reason. Setting the alarm

setpoint to .20 ”OFF” prevents the alarm from sounding.

P63 – Cycle Pressure Alarm

The cycle alarm is a very important alarm in that it will warn if your timer fans

failed to operate. The controller will look for a pressure surge which would

normally be caused when the timer fans turn on. If this pressure surge is not

sensed within the timer period you specify, the controller will signal your alarm

system, thus triggering an alarm. Setting the value of this limit to “OFF”

prevents the alarm from sounding.

8.6 PC Compatible Network Parameters

This option requires Cumberland’s Farm Manager Software. The controller has three functions

which are used to set it up on the Cumberland PC compatible inter-controller network (HHNet).

These are:

P40 - HHNet Address

HHNet allows you to connect up to 32 controllers on a single communications

port of your personal computer (PC). In order for the computer to recognize the

communications from the controllers, each controller must have a unique address.

For example, if you have two Vent Masters, and two Power Vents you would need

to set the first Vent Master to be address 1, the second Vent Master to address 2,

the first Power Vent to address 3, and the second Power Vent to address 4. Valid

settings are 1 - 32. (You do not have to address the controllers in any particular

order.)

P41 -- Version Number

This is not settable. It is the version of controller software.

P42 -- Controller Type

This is not settable. It is a unique number that allows the network software

(Farm Manager) to know the type controller.

8.7 Cool Timer Settings (ON/OFF Stages Only)

The following two settings allow the user to set the Runtime range for their cool timer stages.

These settings apply to the cool timers on the On/Off stages only.

P70 = Cool Timer Maximum Percentage

This sets the maximum Runtime percentage that a cool timer stage can operate.

P71 = Cool Timer Minimum Percentage

This sets the minimum Runtime percentage that a cool timer stage can operate.

8.8 Sensor Calibration

The Vent Master has four sensors that may be calibrated. The parameter(s) for calibration are PSx

with x being the sensor number. The sensor temperature reading is alternately displayed along

Part No. 4801-5098 Farm Hand Vent Master 13

with the parameter number. You should never attempt to calibrate a sensor more than 8 degrees.

If you have a setting that far out of range, it indicates that there is a problem that should be

corrected.

PS1 - Calibrate Sensor 1

This reading can be changed by pressing the + or - button until the desired

reading is displayed.

PS2 - Calibrate Sensor 2

This reading can be changed by pressing the + or - button until the desired

reading is displayed.

PS3 - Calibrate Sensor 3

This reading can be changed by pressing the + or - button until the desired

reading is displayed.

PS4 - Calibrate Sensor 4

This reading can be changed by pressing the + or - button until the desired

reading is displayed.

9. Rarely Changed Settings

Settings which are rarely, or never, changed are found on two banks of switches located inside the front

panel of the controller. The left hand bank of switches is for Tunnel Control, and the right hand bank of

switches controls the status of the controller. When a switch is up it is ON, when a switch is down it is

OFF. The functions of the switches are as follows:

Tunnel Switches

SWX 1 - Tunnel On/Off

This switch is used to enable or disable the tunnel mode of the controller. When

this switch is in the OFF position, the controller will not go into tunnel for any

reason.

SWX 2 - Tunnel On Stage

This switch tells the controller whether it is tunneling off of the lowest

programmed tunnel stage or if it is tunneling off of outside temperature. If this

switch is OFF, the controller will use the “Tunnel On Point” setting for entry

into tunnel.

HIRED-HAND R

V FAN IN V FAN OUT

# 1

Farm Hand Vent Master

Tunnel Switch Bank

Status Switch Bank

Part No. 4801-5098 Farm Hand Vent Master 14

SWX 4 – Split Target Pressures

If SWX 4 is OFF the Target Pressure will be used for both the Vent and Tunnel

machines. If SWX 4 is ON the controller will use the Target Pressure for the

Vent machine and the Tunnel Target Pressure (P22) for the Tunnel machine.

Status Switches

SWX 1 - Lock

This switch is used to lock the controller. When it is on, the user may change

settings such as target temperature and minimum speed/timer percentages but

they can not change the settings in program mode. If the switch is set to ON the

program settings are locked.

SWX 2 – English/Metric Units

This switch toggles between the use of English or Metric units. For English, the

temperatures are displayed in Fahrenheit and the pressure is displayed in inches

of water column (“ w.c.). For Metric units, the temperature is displayed in

Celsius and the pressure is displayed in Pascals or millimeters of water (mm

H2O) depending on the setting of SWX 6. (Note: If SWX 2 is changed, you

will have to reset your tunnel on points and OffPoints and your target

temperature.)

SWX 3 - 5/10 minute timer

This switch selects between a 5 and 10 minute system timer. If the switch is

ON, the timer is 10 minutes.

SWX 4 - Sensor 3 Active

This switch turns off sensor 3. If the switch is off, sensor 3 is turned off.

Note: This is used to disable the sensor in the back half of a half house

brooding situation. This way the low temperature reading does not affect the

temperature readings for the rest of the house. Just be sure that Sensor 3 is

placed in the non-brood end of the house. If the switch is ON, sensor 3 is used.

SWX 5 – Split Vent Units

If SWX 5 is ON, PowerTrak #1 will control the Vents and PowerTrak #2 will

control the Tunnel mode. If SWX 5 is OFF, PowerTrak #1 and PowerTrak #2

will always work together to maintain static pressure.

SWX 6 - Pascals/mm H2O

If SWX 2 is set for Metric units, and SWX 6 is set to ON, pressure is displayed

in millimeters of water (mm H2O). If SWX 6 is set to OFF, the pressure is

displayed in Pascals.

SWX 7 – Initialize Defaults

This switch is not implemented and must remain in the OFF position.

SWX 8 - Program ‘A’ or ‘B’

This switch is used to toggle between 2 preset programs. This could be used to

store separate summer/winter programs for instance. The ON position is for

Program A, and the OFF position is for Program B.

Part No. 4801-5098 Farm Hand Vent Master 15

10. Controller Installation and Setup

Tools Required

Mini Screwdriver Standard Screwdriver

Wire Strippers

Installation Instructions

1. Unpack system, and check that all components are present.

1 Farm Hand Vent Master

1 Installation Kit

1 Fuse Kit

4 Sensors

1 Static Pressure Monitor

1 Manual

2. Hang Farm Hand Vent Master with four screws.

3. Make sure all power supplies are disconnected before breaking any wires, or reaching

into the enclosure.

4. Open the Vent Master and find all connections. Refer to wiring diagrams in back of this

manual.

5. Run sensors out to locations inside the house. (Outside sensor should be installed outside

the house.) Be sure that the sensors are in a safe location, free from any temperature

influences (direct sunlight, water, etc.) Use care when securing sensor wires so that you

do not cut the wire. Any short, or break in the wire will cause improper sensor operation.

6. Connect each sensor to its appropriate terminals inside the enclosure. (See wiring

diagrams in the back of this manual.)

7. Connect wires from stage terminals to the contactor panel, or relay box. See wiring

diagrams for locations of terminals.

8. Hookup three wire connections from Vent Master board to the vent machines. See

wiring diagrams for locations of terminals.

9. Connect the remote pressure unit.

10. CHECK THE POSITION OF THE VOLTAGE SELECTOR SWITCH. Connect

the wires for 120/240V power to the terminals specified in the wiring diagram.

11. Programming Examples

When following these examples, you will need to refer to the Program Reference section to see which

options are available for each of the parameters (P1, P24, etc.).

11.1 Setting Stage OnPoints and OffPoints

OnPoint and OffPoint are easily set by pressing the numbered button on the left hand side of the

front panel. When you press one of the stage buttons, the main display will show “ON”. Then use

the + and - buttons until you see your setting in the individual stage display. (The stage display

you are adjusting will flash until you press the stage button again.) If you want to program all the

stages OnPoints, you may do so by clicking on another stage’s button, then using the + and -

buttons.

Press the stage button again, and the main display will show “OFF” adjust the OffPoint just like

you did the on point. When you are finished, press the stage button again, and you will return to

normal operation. Repeat this process for each of the twelve stages.

Part No. 4801-5098 Farm Hand Vent Master 16

11.2 Setting up Stage Modes, and Timer Status

There are three parameters used in programming any stage. They are P1-P3. The following is an

overview of how to program a stage:

1. Enter Program Mode by pressing and holding the Mode button for 5 seconds until

P1 is displayed, and the stage 1 display begins to flash. This parameter selects the

sensor(s) that this stage watches for on/off operation.

2. Select the stage you want to program by pressing the stage button (next to the stage

display.)

3. Press the + or - button until the desired sensor is displayed. 100= sensor 1; 020 =

sensor 2; 120 = Average of Sensors 1& 2; 003 = Sensor 3; 103 = Average of Sensors

1 & 3; 023 = Average of Sensors 2 & 3; 123 = Average of Sensors 1,2,& 3. If you

want to program more stages sensors, press the next stage’s button, and repeat step

4. Press the Mode button again and P2 is shown. This parameter selects what mode the

stage operates as.

5. Press the + or - button until the desired mode is displayed.

6. If you want to program more stages modes, press the next stage’s button, and repeat

step 6.

7. Press the Mode button until P3 is displayed. This parameter allows you to put a

stage on the system timer (5 or 10 minutes).

8. Press the + or - button until the desired setting is displayed.

9. If you want to program more stages stage timer settings, press the next stage’s

button, and repeat step 9.

10. Exit Program Mode by pressing the Mode button until after PS4 has been displayed

or wait 1 minute.

11.3 Setting Up Tunnel Control

Note: If you do not want the controller to ever enter tunnel mode just make sure that the Tunnel

On/Off switch is in the off position and you can ignore this section.

The Vent Master is a very versatile tunnel controller. It provides the grower with many different

ways to tunnel based on the layout of the house. It also provides two different ways of initiating

tunnel mode. The following are some tips and examples of setting up this controller to tunnel

your house appropriately.

1. The first step in setting up your tunnel house is to configure the stages that you want as your

cool tunnel stages. If some stages need to operate in tunnel mode and in normal mode, then

program these stages to be cool negative tunnel stages. See the Program Reference section

in the back of this manual for more information on the operation of various stage modes.

2. The next step is to determine if you would like to operate your building at a different static

pressure while in tunnel. If so, you must set the Split Target switch (Tunnel Switch SWX 4)

to ON. Then set the desired tunnel pressure with P22.

3. The last step in setting up your tunnel house is determining how you would like to initiate

tunnel mode. You can initiate tunnel mode by outside temperature or by your lowest

programmed cool tunnel stage. The lowest programmed cool tunnel stage is determined by

the lowest OnPoint. If you would like to tunnel based on outside temperature you must set

the Tunnel On Stage (SWX-2) switch to off. You can then set the temperature at which you

would like to enter tunnel mode at P25 and the temperature at which you would like to exit

tunnel mode at P26. Otherwise, set the Tunnel On Stage (SWX-2) to ON.

Part No. 4801-5098 Farm Hand Vent Master 17

11.4 Cool Timer Stage Operation

On the Farm Hand Vent Master any of the ON/OFF can be placed on a cool timer. A cool timer

stage will come on and run at the timer percentage whenever temperature is above it’s OffPoint

(Off), and its timer percentage will increase as temperature rises. The following graph shows how

you can vary this percentage.

Refer to Graph 1 and Table 1. The stage is placed on a cool timer by setting P3=2. A Cool Timer

stage always varies its runtime based on the stage's temperature and its ON and OFF settings. In

this example, the OffPoint is set to 80ºF (OFF=80), and the OnPoint is set to 86ºF (ON=86). The

stage will not run if the temperature is below the OffPoint, as shown in Graph 1. When the

temperature reaches the OffPoint, the stage is placed on the system timer.

To enhance temperature control, the Runtime percentage of a cool timer stage can be varied. The

percentage of the Runtime that the cool timer stage is ON can be varied when the temperature is

between the OffPoint and the OnPoint by setting parameters P70 and P71. In this example, the

Minimum Runtime percentage is 50%, as set by P71 = 50. The Maximum Runtime percentage is

90%, as set by P70 = 90.

When the temperature reaches 80º F the stage runs for 50% of the Runtime period (2-1/2 minutes

if the system timer is set for 5 minutes, or 5 minutes if the system timer is set for 10 minutes). As

the temperature increases, the Runtime percentage of the stage progressively increases up to the

Maximum Runtime percentage of 90% when the temperature reaches 86º F. Above 86ºF, the

Runtime percentage remains constant at 90%.

Table 1 Example Of Cool Timer Stage Operation

Brief Description Of Cool Timer Stage Operation

As you can see, a stage will be placed on the system timer once the temperature rises above 80ºF

(OFF) and will start running 50% (P71) of the time. If the temperature continues to increase then

the run time percentage will also increase toward 90% (P70).

Setting Stage Sensor Stage Mode Stage Timer OffPoint OnPoint Cool Timer

Max % Cool Timer

Min %

Parameter P1 P2 P3

OFF ON P70 P71

Value 10 02 02 80 86 90 50

Option Sensor 1 Cool Stir Timer ON Minimum

OnPoint Maximum

Runtime % Minimum

Runtime %

75 80 85 90

Runtime Percentage

Graph 1 ON/Off Stages

86ºF

OnPoint

50 80º F

OffPoint

Tem

erature

(

)

Part No. 4801-5098 Farm Hand Vent Master 18

11.5 Variable Speed Stage Operation

Depending on the Farm Hand Vent Master model, you have 0 or 2 variable stages. The Variable stages

can be used in one of two ways: Variable Speed or Progressive Cool Timer. The two options are selected

by the parameters P3. The following sections explain the operation of both options.

11.5.1 Variable Speed Stage Operation (Variable Stage Model Only)

Note: This option applies to stages 1 and 2 of the Variable Stage Farm Hand Vent Master.

The variable speed option (P3=0) allows the user to configure the variable stage to vary the speed of the

fan for their minimum ventilation needs. The following explains the setup and operation.

In this case, the stage timer setting is P3=0 to indicate variable speed operation. The Minimum OnPoint

(OFF) is set for 75ºF, and the Maximum OnPoint (ON) is set for 80ºF. This establishes the temperature

range (75º-80º) over which the speed is varied. The variable speed percentage is set by the "Var/Timer

Pct." parameter as described in Section 5.1. In this example, Var/Timer Pct. is set to 50%. The Minimum

Runtime percentage is set to 40% (P10=40).

Below 75ºF, a fan connected to the variable speed stage will run at 50% speed for 40% of the system timer

(either 2 minutes for a 5 minute timer, or 4 minutes for a 10 minute timer). When the temperature reaches

75ºF, the fan will run at minimum speed (50%) continuously. As the temperature increases, the fan speed

progressively increases from 50% up to 100% at 80ºF. Above 80ºF, the fan runs continuously at its

maximum speed.

Table 2 Example Of Variable Speed Fan Control

Brief Description Of Variable Speed Fan Control

From the graph, you can see that at 78F, the variable speed fan will run at 70% of maximum

speed. Below 75F the variable speed fan will run at it’s minimum speed, for the minimum timer

percentage (P10). Above 80F the variable speed fan will run at 100% continuously.

Percent

Of Runtime Percent Of

Full Speed

100

76 78 8077

75 79

TEMPERATURE

(

)

Graph 2 Variable Speed Fan

Minimum OnPoint

Minimum Speed Maximum

Maximum Speed

Setting Stage

Sensor Stage

Mode Stage

Timer Minimum

OnPoint Maximum

OnPoint Minimum

Runtime % Motor

Curve Var/Timer

Percentage

Parameter P1 P2 P3 OFF ON P10 P11 N/A

Value 10 02 00 75 80 40 0 50

Option Sensor 1 Cool Stir No Timer Fan begins

Varying

Speed

Fan begins

Maximum

Speed

Runtime

40% Standard

single

phase

Refer to

Section 5.1

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Cumberland 4801-5098 - Farm Hand Vent Master Owner's manual

Cumberland 4801-5098 - Farm Hand Vent Master Owner's manual

Cumberland 4801-5098 - Farm Hand Vent Master Owner's manual

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